Finding the Fourth Proportional to 9,106.60, 12,568.18 and 5,570.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106.60 : 12,568.18 = 5,570.28 : x
2. Step 2: Convert to fraction form
   9,106.60/12,568.18 = 5,570.28/x
3. Step 3: Cross multiply
   9,106.60x = 12,568.18 × 5,570.28
4. Step 4: Simplify right side
   9,106.60x = 70,008,281.69
5. Step 5: Solve for x
   x = 70,008,281.69/9,106.60
6. Step 6: Final answer
   x = 7,687.64